Anatomy of the Skull
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Questions and Answers

From which direction is the norma occipitalis viewed?

  • Inferior
  • Posterior (correct)
  • Frontal
  • Lateral

What is the term used to describe the head region?

  • Skull
  • Occipital
  • Parietal
  • Cranium (correct)

What is the name of the depression formed by the squamous part of the temporal bone and the parietal bone?

  • External occipital protuberance
  • Orbit
  • Temporal fossa (correct)
  • Piriform aperture

What is the name of the joint between the occipital and the two parietal bones?

<p>Lambdoid suture (C)</p> Signup and view all the answers

What is the name of the elevation observed in the middle of the occipital bone?

<p>External occipital protuberance (A)</p> Signup and view all the answers

What is the name of the suture between the two parietals and the occipital bone?

<p>Lambdoid suture (B)</p> Signup and view all the answers

What is the upper part of the neurocranium called?

<p>Calvaria (A)</p> Signup and view all the answers

What is the name of the opening in the occipital bone?

<p>Foramen magnum (A)</p> Signup and view all the answers

Which of the following bones does not contribute to the structure of the calvaria?

<p>Zygomatic bone (B)</p> Signup and view all the answers

How many fossae are observed in the cranial vault?

<p>Three (D)</p> Signup and view all the answers

Which part of the sphenoid bone forms the posterior boundary of the anterior cranial fossa?

<p>Antero-superior part of the body (D)</p> Signup and view all the answers

Where is the infratemporal fossa located?

<p>Infero-medial to the zygomatic arch and medial to the ramus of mandible (C)</p> Signup and view all the answers

What is the posterior border of the infratemporal fossa formed by?

<p>Mastoid and styloid processes of the temporal bone (B)</p> Signup and view all the answers

Which of the following structures forms the medial wall of the orbit?

<p>Orbital plate of the ethmoid bone (C)</p> Signup and view all the answers

What is the connection between the pterygopalatine fossa and the nasal cavity?

<p>Sphenopalatine foramen (D)</p> Signup and view all the answers

Which of the following bones contributes to the formation of the superior wall of the orbit?

<p>All of the above (D)</p> Signup and view all the answers

What is the name of the largest fonticulus in the newborn skull?

<p>Anterior fonticulus (B)</p> Signup and view all the answers

What is the connection between the orbit and the middle cranial fossa?

<p>Superior orbital fissure and optic canal (D)</p> Signup and view all the answers

Which of the following structures forms the roof of the pterygopalatine fossa?

<p>Greater wing of the sphenoid bone (B)</p> Signup and view all the answers

Which of the following structures forms the lateral wall of the nasal cavity?

<p>All of the above (D)</p> Signup and view all the answers

What is the name of the point where the os parietale, os frontale, os sphenoidale, and os temporale meet?

<p>Pterion (B)</p> Signup and view all the answers

What is the name of the point where the os frontale and the two os nasale meet?

<p>Nasion (A)</p> Signup and view all the answers

Flashcards

Norma Occipitalis

The posterior view of the skull.

Cranium

The bony structure that encloses the brain.

Temporal Fossa

A depression formed by the intersection of the squamous part of the temporal bone and the parietal bone.

Lambdoid Suture

The joint between the occipital bone and the two parietal bones.

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External Occipital Protuberance

A prominent elevation on the middle of the occipital bone.

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Calvaria

The upper part of the neurocranium, forming the roof of the skull.

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Foramen Magnum

The large opening in the occipital bone, allowing the spinal cord to pass through.

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Which bone doesn't form part of the calvaria?

The zygomatic bone does not contribute to the calvaria (roof of the skull).

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How many cranial fossae are there?

The cranial vault is divided into three distinct fossae: anterior, middle, and posterior.

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What forms the posterior boundary of the anterior cranial fossa?

The antero-superior part of the sphenoid bone forms the posterior boundary of the anterior cranial fossa.

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Where is the infratemporal fossa?

A fossa located below and medial to the zygomatic arch and medial to the ramus of the mandible.

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What forms the posterior border of the infratemporal fossa?

The mastoid and styloid processes of the temporal bone form the posterior border of the infratemporal fossa.

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What forms the medial wall of the orbit?

The orbital plate of the ethmoid bone forms the medial wall of the orbit.

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What connects the pterygopalatine fossa to the nasal cavity?

The sphenopalatine foramen connects the pterygopalatine fossa to the nasal cavity.

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Which bones contribute to the superior wall of the orbit?

All of the above bones contribute to the superior wall of the orbit: frontal bone, sphenoid bone, lesser wing of the sphenoid bone.

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What is the largest fonticulus?

The largest fonticulus in a newborn skull, located at the junction of the frontal and parietal bones.

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What connects the orbit to the middle cranial fossa?

The superior orbital fissure and optic canal. Connect the orbit to the middle cranial fossa.

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What forms the roof of the pterygopalatine fossa?

The greater wing of the sphenoid bone forms the roof of the pterygopalatine fossa.

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What forms the lateral wall of the nasal cavity?

All of the above structures contribute to the lateral wall of the nasal cavity: maxillary bone, lacrimal bone, ethmoid bone, inferior nasal concha, palatine bone.

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What is the name of the point where the parietal, frontal, sphenoid, and temporal bones meet?

Known as the pterion, this point marks the meeting of the parietal, frontal, sphenoid, and temporal bones.

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What is the name of the point where the frontal and nasal bones meet?

The nasion marks the meeting point of the frontal bone and the two nasal bones.

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